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I wonder if the growth rings appearing in dinosaur bones are analogous to those of trees, which are determined by the annual climatic cycle. Is it possible that the dinosaur rings were created on a different time cycle? James HendryFlorissant, Mo. Researchers say that they haven’t come up with another type of cycle that seems […]
- Paleontology
Growth Spurt: Teenage tyrannosaurs packed on the pounds
Detailed analyses of tyrannosaur fossils suggest that the creatures experienced an extended growth spurt during adolescence.
- Plants
Lowering lilies on the tree of life
Water lilies may belong on the lowest branch of the family tree of flowering plants, along with a shrub called Amborella.
